Container and method of making the same



Jan. 30, 1940. .lw B. cALvA 2,188,497

CONTAINER AND METHOD OF MAKING THE SAME Filed sept. 24, 1936 2 sheets-sheet 1 Jap. 3o, 1940.

J. B. CALVA CONTAINER AND METHOD 'Ol' MAKING THE SAME Filed sept. 24, 1956 zfsheets-'sneet 2 f Patented JanQjSO, 1940 UNI-TED y STATES aigus? CONTAINERl AND RIETHOD F MAKING THE SAME Jose B. Calva, St. Paul, Minn., assignor, by mesne assignments, to Waldorf Paper Products ACompany, a corporation of Minnesota Applicationseptember 24,1936, Scri'alvNo. 102,262

3 claims.

Thisinvention relates to containers and the,

' 5 forming of the body out of paper or other suitable liquids, oils, or other similar material, owing to `the fact that the thin,fi1mlike, protective liner protects the bodywhich can bel made of paper or other similar light-weight material, of an `economical nature.

AThe ends of my container' arejormed of metal discs which are-formed in a peculiarmanner to provide a strong, durable end which is so connectedl to the tubular non-metallic body as to provide an absolute seal to prevent the 'leakage of liquid from the container. Further, the method which I employ in attaching the metallic ends to the non-metallic tubular body of my container,

provides a new container construction wherein a joint between the non-metallic body and the metal ends is adapted to resist shock and to have a tendency to tighten the-joint or connection between the metallic ends and the non-metallic body if glancing blow is struck against the metal rim of the end of the container. tofore, in old types of containers Where the body was made of non-metallic material,` they were 40 not-provided with liners which were truly liquid and grease-proof. If these old types of containers were dented at the metal ends, they would leak, owing to the fact that the-seal between the metal ends and the non-metallic Wall ofthe container would be invariably broken. I have provided a method of making thecontainer wherein the construction yis designed to cause the joint to tighten rather than to give way if the edge of the metalend is struck aglancing blow, or dented.' Y l y Further, the metal ends of my container are formed with certain defined crimped creases which are positioned so 'as to take the strain transmitted to the edgeof the container and ab'- sorb the same by permitting the edge to dent or lbend if the blow is suiciently hard, and causing a' tightening of the joint by any bending .action directed tothe edge of the metal ends.

The metal ends of my container are embossed with a central outwardly projecting portion, :Y

Here- (ci. zzo-5.5)

around which an annular inwardly extending recess is formed from around the outer edge of which a collar portion projects outwardly along the inner wall of the non-metallic body to the end of the same, and then the metal end is rounded over the end and brought down in a collar-like portion on the outside of the non-metallic body and is provided with a reinforcing bead at the edge which is pressed into the outer wall of the non-metallic body virtually in line and directly across fromthe edge of the annular recess on the inside of the end.' A fter these operations ,have taken place in the forming of the metal ends and the securing of the same to the nonmetallic body, one or more annular grooves may be crimped into the inner collar wall of the metal end., crimping the non-metallicY body more tightly between the inner and outer collar portion of the end..v The outer collar portion 'of the metal end may also be formed with crimped grooves properly positioned. 'I'he crimped grooves act to securely join the metal end to the non-metallic tubular body and also provide the means, of causing the edge of the metal end to bend or buckle in a mannerto tighten the grip between the metal end and the non-metallicl wall of .the body. This is an important function in the construction of this container which is accomplished by the method herein set forth.

- In the drawings forming part of this specification:

Figure 1 is a vertical section through my complete container, showing the construction thereof, and a' portion of which is broken away.

Figure 2 is an enlarged sectional view through a portion of a side wall and an attached end wall secured thereto.

Figure 3 is an enlarged sectional view of a slightly different form of construction from that illustrated in Figure 2 of the drawings.

Figure 4 is an enlarged sectional view similar` cntainer side Wall. and end, when iinished, of

the construction illustrated in Figure 6. Figure' illustrates a dii-ferent end form ofthe container. y I. i

Figure 9 illustrates a metal disc, showing the rst operation in making the metal end of the container.

Figure 10.illustrates a perspective of the disc after the next operation.

Figure 11 diagrammatic'ally illustrates the first forming of the end to the non-metallic side wall.

Figure 12 diagrammatically illustrates the second forming of the end to the paper side wall. Figure 13 diagrammatically illustrates the ilnal forming of the metal end to form an annular crimp in the inner' collar portion of the end.

formed of laminations of paper or other suitable material, and may be spirally or convolutely wrapped to form the wall III of the desired thickness. 'The wall may also be formed or cast of molded pulp or similar material as may be desired.

In carrying out the method of making this container, in making the wall I0, a suitable sheet-like linerII of liquid, moistureor grease-proof material is applied in a manner to provide the liner for the cylindrical body so as to cover the wall I0 on the inside with this liner II. forms a illm-like member over the inside surface of the'wall I0, preventing liquid or semi-solid contents of the package from impregnating or passing into or through the wall I0 of the container A.

The ends I2 and I3 of the container A are adapted to be formed of metal or similar mate rial, and in carrying out my method in forming the container, these ends are adapted to be attached to the `non-metallic or paper body whichforms the wall I0 in a manner so that a positive connection is insured which is designed in a peculiar manner to reinforce the connection between the metallic ends and the non-metallic wall I0.

The first step of the process in making the ends of the container A, is to provide a disc I4 of metal. 'Ihe next step resides in forming the disc I4 with a depressed recess I5 and providing a central disc-like portion I'6. This provides the disc I4 with an outer flange portion I1, which in the second step of the process, extends virtually in a plane with the top of the disc portion I6.

The end I4 is then placed upon the end of the non-metallic wall I0'as illustrated in Figure 11, with the forming roller I8 projecting into the channel I5, and the next step in the method of l making the container A, resides in moving the roller I9 against the outer edge of the flange I1 so as to form a reinforcing bead 20 on the edge of the flange and bending the flange down as illustrated in Figure 12.

The final step of the method of making the container A resides in rolling the flange I1 inward into thefposition illustrated in Figures 1 to 5, '1, 8, and 13; and at thesame time the flange I1 is rolled or crimped against the outer surface of the wall I0 the completion of the crimping of the ends of the container A is accomplished when the roller I8. receives the maximum pressure from the outerfinishing roller 22, thereby completing the annular locking groove means 24 in the inner wall of the collar portion of the end which overlaps and is adapted to be secured to the ends of the cylindrical wall I0. This locking groove 24 accomplishes the liquid-proof'v seal and shock absorbing means.

It will be apparent that the reinforcing bead 20 willbe forced into the side wall` I0 as illustrated in the enlarged section of Figure 2, and

The liner II that this reinforcing bead 20 is virtually in line with the depth of the channel I5. It will also be apparent that the groove portion 24 projects toward the flange I1, pinching the side wall I0 between the flange I1 and the groove 24.

The groove 24 provides a means of reinforcing the ends of the container at the joint with the paper or non-metallic side wall I0 so that any force, such as a blow, struck against the edge y of the container as indicated by the arrow 26 in Figure 5, will cause the edge to bend inwardly as illustrated in dotted outline at 21, causing the groove v24 to more tightly engage into the side wall I0 and thus prevent any loosening of either the end I2 or I3 from the non-metallic side wall I0 of the container A. Each of the ends I2 and I3 are adapted to be attached to the ends of the non-metallic side wall I0 Yin a similar manner by the method hereinbefore set forth, wherein the outer ilange I1 is rolled down and crimped into the outside of the side wall, whereas, a groove 24 is formed on the inside of the collarlike end portion of the ends I2 and I3. It will therefore be understood when the crimping or grooving is described, that it may be applied to either the end I2 0r I3.

The bead 20 grips into the side wall I0. A hook-like flange 21 may be formed on the outer edge of the flange I1 instead ofthe bead 20. The hook-like flange 21 is adapted to be pressed into the side wall I0 so as to grip firmly into the same. The beaded end 20 as well as the flange 21 are adapted to engage into the side wall I0 so that any strain such as described by the force in the direction of the arrows 26 in Figure 5, will not loosen the grip of the bead 20 or the flange 21. Thus a blow of this character if sufficiently severe will bend the edge of the end of the container as illustrated in dotted outline at 21. Therefore, it will be apparent that with this construction, it is virtually impossible to loosen the grip between the ends I2 or I3 and the nonmetallic side wall I0. of the container A. A further development of the form of securing the ends I2 or I3 of my container is illustrated by the inner grooves 24' and the outer groove 28, as illustrated in Figure 4. Further, the position of the outer groove 28 may be varied as illustrated in Figure 3.

The positioning of the groove 24 on the side of the end I2 and the outer groove 28 on the outside below the point of grooving 24 on the inside, illustrates the manner in which the side wall I0 may be gripped. In this form, the larger groove the inside, while the outside ange I1 is provided with an inwardly extending annular groove 28 which presses toward the inside of the collar end formed in the ends I2 and I3, and further, in this form, the hook-like flange 21 grips the non-metallic wall III below the depth of the channel I5. In this construction it will be apparent that whe er the blow be from the inside of the collar ed of the flange of the end I2, or from the outside, it will not loosen the grip of the metallic end with the non-metallic Wall I0, but will tighten the same. In the construction of the grooving illustrated in Figure 4, the gripping of the nonmetallic wall I0 between the grooves 24 and the outer annular groove 28 and the hook flange 21, an equally strong structure is provided wherein .any denting, bending, or undue strain on the edges of the metallic ends I2 or I3, will be absorbed in the grooves, permitting the collar-like projecting flange of the ends which wraps about the non-metallic wall to bend or flex sulciently to prevent loosening of the ends I2 or I3 from the non-metallic wall I0. This is extremely important in sealing the containers A so as to hold the contents without leaking, whether it be liquid, of an oil nature, or other material which isadapt ed to be held within the container A. It isim- Y bendingthe ange I8' down over the outside wall l0 of the containerwhereupon the gasket 30 which may beof any suitable material and preferably of a resilient material, will press into the wall. I0 and provide a resilient seal between the wall I0 and the metal end I2.

' In Figure 8 I have illustrated another form of the container A' wherein the side wall III is made of paper or other non-metallic material, and a liquid, oil, or grease-proof liner 4I I is provided. One end of this container is closed 4by a metallic end, such as I3, whereas the other endv of the container is adapted to be closed by a cap-like portion II of the same material as the liner il ls'made, and this liquid and grease-proof liner II is protected by a metallic fric'tion'or screw cap 32 which engages over the portion of the liner II' which projects over the end of the side wall'l I0 and down the outer side of the same. The

friction or screw cap 32 may be forced onto the end of the body formed by the wall I0 when the liner 'portion Il' is stretched over the end so as to secure the friction or screw ,cap 32 rigidly in place and to provide a means of sealing the end of the wall I0, thereby providing av sealing means having a non-capillary attraction for liquids, oils, or greases.

The method includes the making of a container of the character set forth, havingv primarily the featlne of providing a liner having no aillnity to capillary attraction of liquids, oils,` greases, or semi-solid materials, and in providing a seal for the ends of the same to pinch the liner film tightly in place to positively seal the ends of the container.A v

While there have been containers made heretofore wherein it was the desire ofthe maker to provide a liner which was'liquid and Voil-proof, I have found by tests, that these containers were not provided with liners which would accomplish this result, b ut would breakdown in use long before the expected ordinary life of a container. These old forms were not liquid and oil-proof. Without such liners, containers made of nonmetallic material are impractical.' Further, none of these old forms of containers'had ends sealed by a peculiar form of grooving which would abvided with a central hole 33 which may be closed by a cap 34.as illustrated in Figure 1. Each-of the ends I2 and.I3 are formed with the annular channels I5 which space the central raised disclike portion I6 from the outer peripheral flange I 1. The central disc-like portion provides a stiffening and reinforcing portion in the ends I2 and I3 and also provides a means ofabsorbing a portion of any shock directed to the outer edge of the channel formed by bending the flange I'I over the outer wall of the container. 'I'his chanv,

nel 35 formed in this manneris adapted to receive the end of the non-metallic body to-pinch or squeeze the same tightly between the outer l side I1 and the inner side 36 of the channel 35,

as illustrated in Figure 2. I

I have overcome all of these former objectionable features and have been able to make and put into extensive use my containers for lubricating oil, greases, and otherfliquids and semi-solids, thereby providing an inexpensive yet durable and more practical oil can and liquid container vfor various uses without undue waste of metal and cutting down a large amount of weight in the shipment of any containers. Extensive tests have failed'to develop a breaking down .of my liquid, oil, and grease-proof lined containers, and

Cil

it appears that my containers will stand up indefinitely under ordinary use.

In accordance with the patent statutes,'I have described my container and the method of making lthe same. The illustrations show a form Aof carrying out the method, and it is apparent that variations may be made .by those skilled in the art without departing from the spirit of the invention. v

I claim:

1. A container including a -brous side wall. endportion, a metallic end wall for said container, said end wall including a peripheral channel enclosing the end of the side wall portion, a groove constituting a resisting abutment under shock in the inner wall of the channel extending into saidside wall portion, and integral-'binding A means on the edge of the outer wall of said channel engageable into said side wall portion,

.said means so located asY to. bind the side wall against the inner wall ofthe channel below the aforesaid groove.

2. A container including a. iibrous side' wall end portion, a metallic end -wall for said-container, said end wall including a peripheral'chan.-

nel enclosing the end of the side wall portion, a

groove constituting a resisting abutment -under shock in the inner wall of the channel extending into said side wall portion, and integral binding means reinforcing the channeledge and resist.-

end portion, a metallic end wall for said container,

said end wall including a. peripheral channel enclosing the end of the side wall portion, a groove constituting a'4 resisting abutment' i'mder shock inthe inner wall ofthe channel extending into said side wau portion, and a' flanged integral edge on the outer wall of said channel e'nz against said side wall portion-.said flanged edge so located as to bind the side wall'lsninst the inner wall of the'channel below the aforesaidA BTUOYG.

Jos: n. cama. 

